Spark-arrester



S.S.CASKEY.

SPARK ARRESTER. APPLICATION FILED DEC. i3, I915. RENEWED JAN. 2' I920.1,339,495. Patented May 11, 1920..

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\. ATTORNEYS S. S. 'CASK'EY. SPARK ARBESTEK. APPLICATION FILED nc.'13}1915. RENEWED JAN. 2. 1920.

1,339,495, Patented May 11, 1920.

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' 57 I INVENTOR 3 we 9 BY UMMLQ. w fu%m TTORNEYS S. S. CASKEY.

SPARK ARRESTER.

APPLICATION FILED 050.12, 1915. RENEWED JAN. 2, 1920.

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S. S. CASKEY.

SPARK ARRESTER. APPLICATION FILED DEC. 13, 19I5fRENEWED JAN. 2, I920.

1,339,495.. Patented Ma 11,1920.

4 SHEETSSHEET 4- INVENTOk W P. @H/ 3 TORNE Ys-f UNITED STATElQiBEENTOFFICE.

SAMUEL GASKEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO E. I. DU PONTmnnnonns AND COMPANY, or WILMINGTON, DELAWARE, A CORPORATION orDELAWARE.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented May 11, 1920.

Application filed December 13, 1915, Serial No. 66,444. Renewed January2, 1920. Serial No. 349,087.

To all whom it may concern:

Be it known that I, SAMUEL S. CASKEY, of Philadelphia, in the county ofPhiladelphia, and in the State of Pennsylvania, have invented a certainnew and useful Improve ment in Spark-Arresters, and do hereby de clarethat the following is a full, clear, and exact description thereof.

My invention relates particularly to spark arresters adapted tobeapplied to locomotives and particularly the stacks thereof,but it iscapable of application for similar purposes to other arts.

The object of my invention is to provide improvements in a sparkarrester, which may be automatically applied to and removedfrom thestack of a locomotive without manual adjustment of the same, at the topof the stack, thus avoiding danger of burning, permitting the apparatusto be operated by one man and avoiding lossof time and labor. Furtherobjects of my invention will appear from a detailed descriptionappearing hereinafter.

lVhile my invention is capable of embodimentin many different forms, forthe purpose of illustration 1 have shown only one form thereof in theaccompanying drawings, in which,-

Figure 1 is a side ele ation of an apparatus made in accordance with myinvention;

Fig. 2 is a vertical section of the spark arrester Fig. 3 is ahorizontal section of the same taken on line 33 Fig. 2.

Figs. 4. and 5 are plan views partly in section and partly broken awayof details;

Fig. 6 is a front elevation of the clamping means used for supportingthe spark arrester I Fig. 7 is a side elevation of'the same;

Fig. 8 is an enlarged detail of the bail shown as engaged by the clamp;and

Fig. 9 is a side elevation of a detail of the elevating device for thespark arrester.

In the drawings I have shown a vertical pole 1, which may be set in abody of concrete 2 in the ground at some point along the track of arailroad, as for example, at the entrance to the ard of a plantcontaining combustibles. his pole, near its top has. a stationary sleeve3 held in place by a screw 4. AbQYethe top. of the sleeve 3, there issupported a rotatable casting 5 having projecting from the rear thereof,an arm 6, provided with a counter-weight 7. From the front of thecasting 5 there projects an arm 8 having a bracket 9, to which isattached an adjustable cable 10, extending over the top of a rotatablecap 11, on the top of the pole 1, and beyond the same to thecounter-weight 7 in order to strengthen the rods 6 and 8. On the pole 1there is a winch 12, having a hand-crank 13, for operating a reel 14thereon. Attached to the reel 14: there is a cable 15 which passes overa triple block 16, through which the cable 15 passes downwardly over adouble block 17, at tached to a strap 18 secured to the pole 1. From thetop of the block 16 there extend two cables 19 and 20 which passupwardly over two pulleys 21 carried by a bracket 22 upon the arm 8.From this point the cables 19 and 20 pass over pulleys 23, located in abracket 24. on the end of the arm 8, and then downwardly so as to permittheir ends to be attached to the upper ends of crossed pivoted arms 25and 26 forming a hook or clamp to engage with the spark arresterhereinafter described. The arm 25 is ar ranged so as to pass through aslot 27 in the arm 26, at which point the arms 25 and 26 are pivotedtogether upon a bolt 28. Below the bolt 28 the arms 25 and 26 arearranged so as to provide an opening 29 between the same, across whichopening there are provided movable tumblers 30 and 31 which are pivotedrespectively to the arms 25 and 26 in recesses 32 and 33 in said arms.At the lower end of the opening 29 the arms 25 and 26 are providedrespectively with fiat surfaces 34 and 35 which are located in asubstantially horizontal position. At their lower ends the arms 25 and26 are provided respectively with widened and flared jaws? which may bedisengaged from the same lowering the hook or clamp sufliciently to movethe bail or ring 40 above the tumblers 30 and 31, after which an upwardmovement of the hook or clamp will disengage the same from said bail orring 40. On the bail or ring 40, there is a downwardly directed rod 41at its lower end, which has a washer 42 near the top thereof and beneathwhich there are located two conical bushings 43 and 44 beneath whichthere is located a pair of nuts 45, screw-threaded on the rod 41.Against the bushings formed by the washers 43 and 44, rest rods 46having outwardly turned upper ends 47 which are bound against saidbushing by a ring 48. These rods 46 are arranged in a conical orpyramidal position at their upper ends, but are located in a cylindricalor prismatic position at their lower ends and are maintained in thisposition by an angle iron in the form of a ring.49 situated at the topsof the vertical portions of the rods 46 and a cast iron ring 50 locatedat the bottom of the same.

The rods 46 are covered with a wire mesh basket 51, which is held inplace at its upper end by a ring 52, extending around the rods 46. Itis, furthermore, secured to said arms 46 by twisted pieces of wire 53located at intervals along the same. The cast iron ring 50 is providedon its interior with ears 54, to which there are pivoted levers 55,having upwardly directed overbalanced arms 56 and -"'downwardly directedsupporting arms 57 which are connected by links 58 to segmental plates59, pivoted by straps 60 to straps 61. attached to the outside of thecast ing 50. The downwardly directed arms 57 are arranged so as to restagainst the outside of the stack 39, and the segmental plates 59 arearranged so as to fit tightly against the outside of said stack 39. Ifdesired, there may be provided means for swinging the "arms 6 and 8, asfor example, by a cable. 62,

fastened at its top to the arm 8. and at its lower end to a cleat 63 onthe pole 1.

In the operation of the apparatus, it will be assumed that the hook orclamp formed by the. arms'25 and 26 is engaged with and supports one ofthe spark arresters 38 by engagement of the top of the bail 40 with thehorizontal surfaces 34 and 35. Normally,-

the arms 6 and. S will be maintained in a position parallel to thetracksof a railroad.

When it is desired to apply the spark arrester 38 to the stack 39 of thelocomotive, the arms 6 and 8 are swung into position at right angles tothe tracks by pulling upon the cable 62. The cable 62 is now releasedfrom the cleat 63 and the spark arrester lowered upon the top of thestack 39. The spark arrester 38 now rests upon the upwardly directedarms 56, which are moved when they come in contact with the top of thestack 39 until the downwardly directed arms 57 rest against the side ofsaid stack 39 m which position the segmental plates 59 fit tightlyagainst the ,sides of said stack. The hook or clamp formed by the arms25 and 26 is now lowered farther, which causes the tumblers 30 and 31 tobe moved past-- arms 25 and 26, thus permitting'the'clamp to bewithdrawn from the bail or ring 40 by a further upward movement of theclamp. The spark arrester 38 while on the stack 39 effectively preventsthe escape of sparks owing to the presence of the wire mesh basket 51,which incloses the top and side of the same, and owing to the segmentalplates 58 and 59, closes the spark arrester at the bottom thereof. Theconical or pyramidal form at the top of the spark arrester, and the factthat it is larger in diameter than the top of the stack 39, provide avery much increased area for the escape of the gases from the top of thestack 39, so that the escape of the gases is not in any way impeded.WVhen it is desired to remove the spark arrester 38 from the 1000-motive, the arm 8 is swung over the top of the same and the hook orclamp formed by the arms 25 and 26 lowered until the widened and flaredjaws 37 coiiperate with the top of the bail or ring 40. When this takesplace, the wide flaring jaws 37 will guide the clamp in the properdirection for engagement with the ring or bail 40 so that when engagedthe top of the bail or ring 40 occupies the position immediately abovethe horizontal surfaces 34 and 35. The hook or clamp is now elevated. Asit is elevated, the weight of the arms 56 is suflicient to move the arms57 and the segmental plates 59 away from the side of the stack 39, sothat the spark arrester 38 may thus be readily moved upwardly above andaway from the top of said stack. The arm 8 may now be again swung into aposition parallel with the tracks of the railroad, where it does not inany way interfere with the traffic upon the same.

While I have described my invention above in detail, I wish it to beunderstood be fitted against the side of the stack by thedownwardmovement of the cover.

2. A spark arrester having a cover with openings, and means forsupporting the same spaced from the top of the stack, con1- prisingautomatic closing devices, including iii a stack supported lever,adapted to be fitted against the side of the stack by the downwardmovement of the cover.

3. A spark arrester having a cover with openings, and means forsupporting the same spaced from the top of the stack, comprisingautomatic closing devices adapted to be fitted against the side of thestack, including a stack supported lever, having a downwardly bearingupper arm and a side bearing lower arm, fitting against the side of thestack.

4t. A spark arrester having a cover with openings, and means forsupporting the same spaced from the top of the stack, comprisingautomatic closing devices adapted to be fitted against the side of thestack by the downward movement of the cover, and a bail at the top ofthe spark arrester.

5. A spark arrester having a cover with openings, and means forsupporting the same spaced from the top of the stack, comprisingautomatic closing devices adapted to be fitted against the side of thestack, including a stack supported lever, adapted to be fitted againstthe side of the stack by the downward movement of the cover, and a bailat the top of the spark arrester.

6. A spark arrester having a cover with openings, and means forsupporting the same at a distance above the top of the stack, comprisingautomatic closing devices adapted to be fitted against the side of thestack, including a stack supported lever, having a downwardly bearingupper arm and a side bearing lower arm, fitting against the side of thestack, and a bail at the top of the spark arrester.

7. A spark arrester having a cover with openings, and means forsupporting the same upon the top of the stack, comprising automaticclosing devices adapted to be fitted against the side of the stack bythe downward movement of the cover.

8. A spark arrester having a cover with openings, and means forsupporting the arse upon the top of the stack, comprising automaticclosing devices adapted to be fitted against the side of the stack,including a stack supported lever, adapted to be fitted against the sideof the stack by the downward movement of the cover.

9. A spark arrester having a cover with openings, and means forsupporting the same upon the top of the stack, comprising automaticclosing devices adapted to be fitted against the side of the stack,including a stack supported lever, having a down wardly bearing upperarm and a side bearing lower arm, fitting against the side of the stack.

10. A spark arrester having a cover with openings, and means forsupporting the same upon the top of the stack, comprising automaticclosing devices adapted to be fitted against the side of the stack bythe downward movement of the cover, and a bail at the top of the sparkarrester.

ll. A spark arrester having a cover with openings, and means forsupporting the same upon the top of the stack, comprising automaticclosing devices adapted to be fitted against the side of the stack,including a stack supported lever, adapted to be fitted against the sideof the stack by the downward movement of the cover, and a bail at thetop of the spark arrester.

12. In combination, a spark arrester adapted to surround the end of astack, and means for automatically closing the annular space between theside of the stack and spark arrester by the downward movement of thelatter into operative position.

13. A spark arrester comprising a body with openings adapted to inelosethe end of a stack, movable plates adapted to extend between the side ofthe stack and the arrester when the latter is in position, and 1eversconnected to said plates adapted to en gage the stack to move saidplates into operative position.

In testimony that I claim the foregoing I have hereunto set my hand.

SAMUEL S. GASKEY.

Witnesses JOHN LEE PRATT, MAURICE on Pom LEE,

